{"id":"CVE-2026-76025","kind":"vulnerability","aliases":["CVE-2026-76025"],"related":[],"title":"Chrome: use-after-free in FileSystem lets a web page run code","description":"Use after free in FileSystem in Google Chrome prior to 156.0.8078.79 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"A memory-handling bug in Chrome's FileSystem component (a use-after-free) lets a crafted HTML page make the browser execute attacker code inside the renderer sandbox. Chromium rates it High severity.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","chrome","desktop-users","runtime"],"not_affected_if":["chrome-updated"],"how_to_check":"- Check the installed Chrome version in the browser's About page or with `google-chrome --version`\n- Compare it against the fixed version `156.0.8078.79`","fix":"- Google Chrome: update to `156.0.8078.79` or later","status":"open","published_at":"2026-10-30T01:16:46+00:00","first_seen_at":"2026-10-30T01:27:58+00:00","triaged_at":"2026-10-30T01:29:47+00:00","updated_at":"2026-10-30T01:29:47+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-10-30T01:29:47Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: update to `156.0.8078.79` or later","reach":"internet","title":"Chrome: use-after-free in FileSystem lets a web page run code","impact":"high","summary":"A memory-handling bug in Chrome's FileSystem component (a use-after-free) lets a crafted HTML page make the browser execute attacker code inside the renderer sandbox. Chromium rates it High severity.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","browsers","desktop-users"],"confidence":0.8,"fix_status":"available","needs_auth":"no","worst_case":"Attacker code runs inside the browser sandbox on a visited page","analyst_note":"","how_to_check":"- Check the installed Chrome version in the browser's About page or with `google-chrome --version`\n- Compare it against the fixed version `156.0.8078.79`","plain_action":"Update Google Chrome to version 156.0.8078.79 or later: Chrome menu > Help > About Google Chrome.","needs_analyst":false,"not_affected_if":["chrome-updated"],"who_is_affected":"Any installed Google Chrome build older than 156.0.8078.79 is exposed when a user opens a malicious web page. Servers and users who do not run Chrome on the affected version can skip it; the flaw is reached through web content, not a server setting.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000665,"input_tokens":4104,"output_tokens":509,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':15A,18A '-76025':16A,19A '156.0.8078.79':71C 'allow':72C 'arbitrari':78C 'attack':50B,75C 'browser':20B,48B 'bug':30B 'chrome':1A,21B,32B,68C 'chromium':56B,88C 'code':13A,51B,79C 'compon':35B 'craft':43B,85C 'cve':14A,17A 'desktop':23B 'desktop-us':22B 'execut':49B,77C 'filesystem':7A,34B,65C 'free':5A,40B,63C 'googl':67C 'handl':29B 'high':59B,91C 'html':44B,86C 'insid':52B,80C 'let':8A,41B 'make':46B 'memori':28B 'memory-handl':27B 'page':11A,45B,87C 'prior':69C 'rate':57B 'remot':74C 'render':54B 'run':12A 'runtim':25B 'sandbox':55B,82C 'secur':89C 'sever':60B,90C 'use':3A,38B,61C 'use-after-fre':2A,37B 'user':24B 'via':83C 'web':10A","nicknames":[],"mitigations":[],"who_affected":"Any installed Google Chrome build older than 156.0.8078.79 is exposed when a user opens a malicious web page. Servers and users who do not run Chrome on the affected version can skip it; the flaw is reached through web content, not a server setting.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"everyone","plain_action":"Update Google Chrome to version 156.0.8078.79 or later: Chrome menu > Help > About Google Chrome.","first_public_at":"2026-10-30T01:16:46+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-76025","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-76025","severity":null,"published_at":"2026-10-30T01:16:46+00:00","modified_at":"2026-10-30T01:16:47+00:00","first_seen_at":"2026-10-30T01:27:58+00:00","fetched_at":"2026-10-30T01:27:58+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}